For those who need to understand IP tables in simpler terms I have my own version of a small tutorial for them.
Following are some syntax related to iptables:
1] Block incoming packets from a single IP:
#iptables -I INPUT -s xxx.xxx.xxx.xxx -j DROP
2] Block incoming packets from a single IP on a single port:
#iptables -A INPUT -p tcp --source 1.2.3.4 --destination-port 22 -j DROP
3] Block incoming packets from a single IP on a range of ports (example: 5999:6003):
#iptables -A INPUT -p tcp --source
4] Block incoming packets from ANY ip coming in on a single port:
#iptables -A INPUT -p tcp --source 0.0.0.0 --destination-port 22 -j DROP
5] Block incoming packets from ANY ip coming in on a range of ports (example: 5999:6003):
#iptables -A INPUT -p tcp --source 0.0.0.0 --destination-port 5999:6003 -j DROP
6] Block outgoing packets on a single port:
#iptables -A OUTPUT -p tcp --destination
7] Block outgoing packets on a range of ports (example: 6660:6669):
#iptables -A OUTPUT -p tcp --destination 0.0.0.0 --destination-port 6660:6669 -j DROP
BLOCK RANGE OF IPs:
1] To block the entire range of 80.142.77.0 through 80.142.77.255
#iptables -A INPUT -s 80.142.0.0/24 -j DROP
2] To block the entire range of 80.142.0.0 through 80.142.255.255
#iptables -A INPUT -s 80.142.0.0/16 -j DROP
3] To block the entire range of 80.0.0.0 through 80.255.255.255
#iptables -A INPUT -s 80.0.0.0/8 -j DROP
Howto IPtables (Simpler version)
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- Naik
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Howto IPtables (Simpler version)
Hâve á nice day !!
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- Lance Naik
- Posts: 46
- Joined: Mon May 30, 2005 3:22 am
- Location: LAHORE
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Thanks,
Slaam! Mr.Crazy ____.
thats a fine way to tech ppl like me. please describe some other thing. like PORT forwording.
and also. some discripion about swithes. -n ,-t ... etc
thats a fine way to tech ppl like me. please describe some other thing. like PORT forwording.
and also. some discripion about swithes. -n ,-t ... etc
Mahmood-ul-Hassan